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vj_sur
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6 balls - numbered 1-6, pick one at a time without 13 Sep 2004, 12:52
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6 balls - numbered 1-6, pick one at a time without replacement, order does not matter - what are the possible combinations?

a. 10 b. 20 c. 30 d. 40 e. 50



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lovely
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6 balls - numbered 1-6, pick one at a time without 13 Sep 2004, 12:59
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vj_sur
6 balls - numbered 1-6, pick one at a time without replacement, order does not matter - what are the possible combinations?

a. 10 b. 20 c. 30 d. 40 e. 50
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sure you have the question right?
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6 balls - numbered 1-6, pick one at a time without 13 Sep 2004, 13:03
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I believe so. I'm getting an answer of 720.

heres how I did it - the 1st time I've 6 ways, the 2nd 5 ways.....the 6th 1 way. So I did 6*5*4*3*2 = 720 - Is this the right way to do this problem?

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sure you have the question right?
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6 balls - numbered 1-6, pick one at a time without 13 Sep 2004, 13:04
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I'm getting an answer of 720.

heres how I did it - the 1st time I've 6 ways, the 2nd 5 ways.....the 6th 1 way. So I did 6*5*4*3*2 = 720 - Is this the right way to do this problem?

lovely
sure you have the question right?
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vj_sur
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6 balls - numbered 1-6, pick one at a time without 13 Sep 2004, 13:06
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Lovely - do you think there is a problem with the question? I picked it up from a website.
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lovely
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6 balls - numbered 1-6, pick one at a time without 13 Sep 2004, 13:10
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well, seems like the choices are wrong... i thought the solution would be 720 also, but it is way off from the choices...

would think it should be 6!
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6 balls - numbered 1-6, pick one at a time without 13 Sep 2004, 13:32
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I also get 720.

if you pick one ball, you have 5 other possibilities for the second, 4 for the third, 3 for the fourth, 2 for the fifth and 1 for the sixth. This makes an total of 120.

But the first ball has also an combination of 6 choices. Therefore the answer should be: 6*5*4*3*2*1 = 720

Regards,

Alex
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6 balls - numbered 1-6, pick one at a time without 13 Sep 2004, 13:40
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This question is poorly worded and even wrong. What is the point of picking 6 numbers without replacement if order does not matter? This means that no matter the order in which you are pulling out the balls, you will always get ONE possibility since it is THE SAME 6 NUMBERS that you are pulling out every time. Answer to your question should be 6C6 = 1.



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Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Quantitative Questions Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!